K Series Manifold

[never]

This is going to take a bit of explaining so here goes;

 

Got my 32/32 weber on the car and the adapter plate has a hole through it that is a long oval but the manifold that it connects to has two small circular holes. So the air from the carby goes through the adapter then hits the inlet manifold where it has to go through 2 holes and hits a bridge of metal in the middle. Now my mechanic has suggested I take to the inleft manifold with a file/hacksaw or something similar and turn the 2 holes into one oval as per the adapter plate. This is supposed to decrease the air flow restriction and give me more power essentially for free! Sounds good to me. Does this make sense to you guys?

 

Not particularly keen on butchering my manifold and then having something go wrong as I still need the car for work. So the plan would be to use another manifold and that way I could set up the pcv valve on it aswell as per my previous post. I got a heap of spare parts with my car and was rummaging around and found an inlet manifold but it looks different to the one on the car. It has an extra runner on it for some sort of emissions stuff, but it does have an oval inlet. Do I try do something with this one or find myself another non emissions k manifold?

 

Pic below of inlet manifold with oval opening and the extra runner thing highlighted in red...

[WinKE55]

I know what you mean from the first post, I have also got a file and filed my hole where my carby sits, just match it up with the adapter plate, wont too any harm, just becareful when you file I suppose. I have never seen that manifold before, looks totally different to my KE55 manifold I have right here next too me.

 

I maybe guessing but that is probably a ke30 below manifold? Off maybe 3K's or below?

[7shades]

I had a 32/36 on a ke55 manifold (with the separator removed) and noticed no ill effects. I used a 55 mani as they seem to have a slightly longer inlet tract with a more gradual curve. I Just blocked off any superfluous holes for the pollution junk with some of that 'metal mend' 2 part epoxy resin stuff.

[Taz_Rx]

I've never seen a manifold like that befor! :dance: The extra runner part I mean. Any chance youcan take some more pics of it for us?

 

Maybe its some sort of emission manifold off like a 5k van or something, god knows maybe even a forklift!!

[tojo2]

Yep. 5k van. On mine the extra runner was just blanked off. Check if the manifold port sizes fit your head ports :dance:

 

http://i211.photobucket.com/albums/bb125/t..._11115k0004.jpg

Edited September 24, 2008 by tojo2

[never]

I am pretty sure its a 5k manifold, from what I dunno. Happy to get more pics for ya.

 

I will find myself a standard k manifold and do my mods to that rather than molest my standard one. Means less time off the road as well doing it that way

[philbey]

Just do the mods on the one you've got and get it running, and then drive the newly modded car to the wrecker and pull another one off if you're worried.

 

Its not like you're butchering a 427 chev factory injection manifold off a 60's corvette, its a K Manifold!

[Hiro Protagonist]

My best bet is that the extra runner is for something like EGR or air-induction, either way it's not something you'd hook up in a worked motor. Blocking it off inside the manifold would be better too, otherwise it'll screw with flow something shocking, and resonate to boot.

[SLO-030]

Mount a nitrous injetor there ey bro :dance:

 

Yea EGR is what id say its for, seing as it doesnt have the external piping like the KE70 4k manifold i have here.

Edited September 25, 2008 by KE25 KID

[never]

Well things went pretty well. Got the manifold that was on the car off and thanks to some handy dremel work from a mate and some filing by me the opening is now a nice oval shape. Due to it being a saturday and the fact I underestimated how hard it would be to find a suitable hose fitting to use for the pcv valve on the manifold it didn't get done. I now know that most hose fittings have a tapered thread and the required tap for making the thread is worth about $50. I tried doing it with a metric thread but ran out of time finding the correct metric tap. Apparently I had chosen a size that was rare.

 

So she is all back together again and after my little manifold mod I have noticed a small increase in power and respsonsiveness. Would have provided photos but with all the stuffing around it just didn't happen